title: Antioxidant defence of red blood cells and plasma in stored human blood.
abstract: Blood collected routinely from donors, and preserved with CPDA-1 anticoagulant (citrate, phosphate, dextrose, adenine), was investigated. The concentration of reduced glutathione, and glutathione peroxidase, glutathione S-transferase, glutathione reductase, superoxide dismutase, and catalase activities in erythrocytes, as well as the total radical-trapping antioxidant parameter in plasma were determined on days 1, 3, 7, 12, 16, 20 and 25 of storage. At the end of the study, a 30% decrease in the reduced glutathione concentration (P < 0.001) and decreases in glutathione S-transferase (over 20%, P < 0.001), glutathione reductase (over 8%, P < 0.01) and superoxide dismutase (over 10%, P < 0.001) activities in erythrocytes, together with up to a 30% diminution of total antioxidant activity in plasma (P < 0.001) were noted. Thus, during blood storage, glutathione-dependent antioxidant systems in erythrocytes and antioxidant defence in plasma are depleted. From the present study, a twelve-day period can be considered a safe storage limit. The sequence of events occurring in stored blood, leading to peroxidative injury in erythrocytes, is discussed.
authors.affiliation: Institute of Obstetrics and Gynaecology, School of Medicine, Białystok, Poland. jozwik@obgyn.edu.pl
authors.forename: M
authors.initials: M
authors.lastname: Jóźwik
authors.forename: M
authors.initials: M
authors.lastname: Jóźwik
authors.forename: M
authors.initials: M
authors.lastname: Jóźwik
authors.forename: M
authors.initials: M
authors.lastname: Szczypka
authors.forename: J
authors.initials: J
authors.lastname: Gajewska
authors.forename: T
authors.initials: T
authors.lastname: Laskowska-Klita
mesh_terms: D000328:Adult; D000975:Antioxidants / Q000737:chemistry*; D001793:Blood Preservation; D002374:Catalase / Q000097:blood; D004912:Erythrocytes / Q000737:chemistry* / Q000201:enzymology; D005978:Glutathione / Q000097:blood; D005979:Glutathione Peroxidase / Q000097:blood; D005980:Glutathione Reductase / Q000097:blood; D006801:Humans; D066298:In Vitro Techniques; D007202:Indicators and Reagents; D010949:Plasma / Q000737:chemistry* / Q000201:enzymology; D013482:Superoxide Dismutase / Q000097:blood
chemical_list: D000975:Antioxidants; D007202:Indicators and Reagents; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D005980:Glutathione Reductase; D005978:Glutathione